BIOS and CMOS Error Messages and How to Fix Them
โถ BIOS ROM Checksum error
This error appears when there is a problem with the ROM that stores system information.
It occurs when there is an issue while reading the information stored in CMOS. In this case, enter CMOS SETUP and check whether each setting is configured correctly for the current system state.
After completing the settings, select 'SAVE AND EXIT SETUP' to save the changes.
If the system is old, the ROM itself that stores the BIOS information may be damaged. In that case, it is recommended to have it inspected at a motherboard repair shop or service center.
โถ Press [F1] to continue
This message usually appears when the keyboard or mouse is not connected properly.
Please check whether both devices are connected securely to their connectors.
It is also a good idea to check whether the hard disk information is set correctly in CMOS SETUP.
โถ CMOS memory size mismatch
This error occurs when the system cannot properly recognize the memory (RAM).
When new RAM is added, CMOS usually detects it automatically, but in some cases the correct memory size is reflected only after running CMOS SETUP.
Enter CMOS SETUP, check the settings, and then reboot the system.
โถ NO ROM BASIC
This message appears when an error occurs during booting.
It usually occurs when the system cannot boot from drive A. In this case, you need to insert a bootable floppy disk into drive A or change the boot setting to boot from the hard disk drive.
Similar error messages include 'Diskette Boot Failure' and 'Invalid Boot Diskette'.
โถ CMOS display type mismatch
This error occurs when there is a problem with the graphics-related settings in CMOS.
It happens when the graphics type in the 'Video...' item in CMOS SETUP is not set to EGA/VGA.
Since this is the default setting used by most graphics cards, please make sure to check it.
โถ Cache Memory Bad..
This indicates a problem with the cache memory installed on the motherboard.
Cache memory is used to improve system speed, and on some motherboards, this error may appear if the cache memory fails.
In this case, you can replace the cache memory or try setting the cache memory usage option in CMOS SETUP to 'Disable'.
The same symptom may also appear when cache-related settings such as 'Cache Write' are configured incorrectly, so please check those settings as well.
Today's News/Tips
oCam Advanced Settings - Recording - Resize
oCam is a powerful screen recording program that lets users freely adjust video quality and resolution through a variety of recording settings. In the settings window that appears when you click "Tools - Options," the "Resize" tab under the "Recording" category provides features for fine-tuning the output resolution and quality of recorded videos. This tab is especially useful for users who want to optimize the output size and quality of their videos, and it can be used effectively by everyone from beginners to IT professionals according to their needs. Below is a detailed explanation of the main settings in the "Resize" tab.
Resize Video
If you check the "Resize Video" option, the size of the recorded video will be adjusted according to the resolution and quality settings you choose. This feature is useful when you want to resize the recorded video to a specific resolution in order to reduce file size or output it in a format optimized for a certain platform such as YouTube or Twitch. If this option is not enabled, the video will be saved at the original size of the recording area, and the resizing process will be skipped.
Supported Resolutions (Presets)
oCam provides a variety of resolution presets so users can easily choose the output size they want. The supported resolution presets are as follows:
4320p UHD 8K (7680x4320): Ultra-high-resolution video available on high-spec systems. However, only the MPEG-4 codec supports this resolution, and other built-in codecs do not support 8K.
2160p UHD 4K (3840x2160): Suitable for producing high-quality video.
1440p QHD (2560x1440): Provides sharp image quality and is suitable for users with high-resolution monitors.
1080p FHD (1920x1080): The most widely used standard resolution for YouTube and streaming platforms.
720p HD (1280x720): Suitable for general web content.
480p (854x480), 360p (640x360), 240p (426x240), 144p (256x144), 120p (160x120), 96p (128x96): Low-resolution options that can reduce file size or be used in lower-spec environments.
Half Size: Outputs the recording area with both width and height reduced by half.
Specify Width Only and Keep Height Fixed: If the user enters a width, the height is adjusted based on the original recording area height.
Specify Height Only and Keep Width Fixed: If the user enters a height, the width is adjusted based on the original recording area width.
Custom: Lets the user directly enter the desired width and height to output at a fully customized size.
If you use an external codec, some resolutions may not be supported depending on the codec's characteristics, so it is a good idea to check codec compatibility before recording.
Resolution Adjustment Methods
Half Size: This option reduces the width and height of the recording area to 50% each. For example, if the original recording area is 1920x1080, setting it to Half Size will output it at 960x540. This is useful when you want to reduce file size.
Specify Width Only and Keep Height Fixed: When the user enters a width, the height is calculated automatically while maintaining the original aspect ratio of the recording area. For example, if the width is set to 1280 and the original height is 720, the output resolution becomes 1280x720.
Specify Height Only and Keep Width Fixed: Conversely, when a height is entered, the width is adjusted to match the original aspect ratio. This method is suitable for platforms that require a specific vertical resolution, such as mobile content.
Custom: Both the width and height can be entered directly, allowing the output size to be adjusted exactly as desired. This option is suitable for advanced users with specific resolution requirements.
Quality Setting
The "Quality" setting determines the image quality of the output video when resizing is applied. The higher the quality, the sharper the video will be, but resizing may take longer and consume more system resources. On the other hand, lowering the quality speeds up the resizing process, but the sharpness of the video may decrease somewhat. Users should choose an appropriate quality level by considering file size, system performance, and the purpose of the video, such as high-quality streaming or simple sharing.
Usage Tips
The settings in the "Resize" tab can be adjusted flexibly depending on the purpose of the video and the system environment. For example, if you want to record in 1080p FHD for YouTube upload, it is best to choose that preset and set the quality to high. On the other hand, if you want a smaller video file for quick upload to social media, choosing a lower resolution such as 720p or 480p and setting the quality moderately lower can be more efficient. If you want to try 8K recording, you must use the MPEG-4 codec, and it is important to check in advance whether your system supports it. Also, by using custom resolutions, you can create videos that match the exact requirements of a particular platform or project.
The "Resize" tab in oCam supports a wide range of recording scenarios through intuitive presets and flexible custom options. Beginners can get started easily with simple presets, while IT professionals can achieve optimal results through detailed resolution and quality adjustments. Try using these settings according to your recording purpose and system environment.